Warm refried beans in a saucepan.,Place tortillas on a flat baking tray and spread with warmed beans, leaving a well in the centre.,Crack an egg into the well.,______,Bake in moderate oven for 4-6 minutes, or until egg is cooked to your liking.,Meanwhile, chop avocado and tomatoes and mix with sweet chili sauce and season to taste.,Serve tortillas with avocado mixture and sour cream.